in my opinion, India could be an important factor in the development of bitcoin in South Asia. if India does not ban bitcoin, I think countries in south asia will take part, although the process will be long and time consuming. The point is back to the government in that country.
You're saying that if Indian government accept bitcoin then this will be the start to light up the south Asia to start accept bitcoin? I think it was really hard for other country to accept bitcoin since they can't never manipulate it that's why many governments doesnt recognize. Bug it is good for India if they don't ban it.